1. To access Dual window, press and hold the Back key.
   Note: You can also open Dual window by tapping the Recent Apps key > Dual window.
   
2. Tap the desired apps to open.
   
3. Touch and drag the Blue divider icon to adjust the window size.
   
4. To access more options, tap the Menu icon.
   
5. To close the window, tap X.
   
6. To expand a window, tap the Expand icon.
   
7. To access the apps tray, tap the Apps icon.
   
8. To switch the windows around, tap the Rotate icon.
   
9. To turn Dual window on or off, swipe down from the top of the screen to access the Notifications menu.
   
10. Tap the Settings icon.
    
11. Under General, scroll to, then tap the Dual window ON/OFF switch to turn Dual window on or off.